What Is a Good MAF Pace? How to Know If You're Making Progress

Every runner who starts MAF training asks some version of the same question: is my pace good? Should it be faster? How slow is too slow?

The honest answer is that your starting MAF pace doesn't matter much. What matters is whether it's improving. This guide explains what typical MAF paces look like, why comparing yours to others is the wrong framework, and how to measure progress in a way that actually tells you something.

Why There's No "Good" Starting MAF Pace

Your MAF heart rate is calculated from Dr. Phil Maffetone's 180 Formula: 180 minus your age, adjusted for health and training history. For most recreational runners, that lands somewhere between 130 and 150 bpm. The pace you can sustain at that heart rate depends on your current aerobic fitness, not your general fitness.

This is the part that surprises people. A runner who's been doing tempo runs and intervals for two years may have good top-end speed and decent 5K times. But if they've been consistently training above their aerobic threshold, their aerobic base may be underdeveloped relative to their overall fitness. When they start MAF training, their pace at 140 bpm can be much slower than they'd expect.

The inverse is also true. Runners who've done years of easy, conversational running often have better aerobic bases than their race times suggest. Their starting MAF pace reflects that.

So there's no standard benchmark to measure yourself against. Your starting pace is just your starting point.

What Typical Starting MAF Paces Look Like

That said, here are realistic ranges. These are approximate, based on common experience rather than clinical data, and they vary considerably based on age, fitness background, and which adjustment you applied to your MAF heart rate.

Newer runners or those returning from a break: 8:30 to 12:00/km (13:40 to 19:20/mile) is common. Some runners find they need to walk portions of their runs to stay under their ceiling, especially in the first few weeks.

Recreational runners with 1 to 3 years of inconsistent training: 7:00 to 9:00/km (11:15 to 14:30/mile) is typical. Most have been training above their aerobic threshold without realising it.

Runners with consistent training history and decent aerobic base: 5:30 to 7:00/km (8:50 to 11:15/mile). This group often finds their MAF pace is already close to their comfortable easy run pace, which is a sign of a well-developed aerobic system.

Very aerobically fit athletes: Sub 5:00/km (8:00/mile) or faster. Typically runners who've been doing high volume at easy intensities for years, or athletes coming from endurance sports backgrounds.

Again: none of these are targets. They're context. If your starting pace is 9:30/km (15:15/mile), that's not a problem. The aerobic base is genuinely underdeveloped and the training will build it. The pace will improve.

The Only Metric That Matters: Your MAF Test

The MAF test is how you measure progress. It's a structured field test that produces an objective number: your pace at your MAF heart rate, on the same course, under similar conditions, every 4 weeks.

Here's the protocol:

1. Warm up for 15 minutes with easy walking or very slow jogging.
2. Run 5 kilometres (3.1 miles) at exactly your MAF heart rate. Not above it. Use your GPS watch to keep the heart rate steady.
3. Record your average pace.
4. Cool down for 10 minutes.
5. Repeat every 4 weeks on the same flat, measured course.

Over a training cycle, your MAF test pace should improve. A runner who starts at 8:00/km (12:50/mile) and reaches 6:45/km (10:50/mile) after 12 weeks has demonstrably built aerobic fitness. That improving pace is the signal that the method is working.

See the full MAF test guide for complete protocol details and how to interpret your results.

How Much Should Your MAF Pace Improve?

Progress varies. Some runners see significant improvement in the first 4 to 8 weeks. Others progress more slowly, particularly if their diet is high in processed carbohydrates or if they're under significant life stress (which elevates resting heart rate and makes the aerobic ceiling harder to maintain).

Realistic expectations over a 12 to 16 week base phase:

• Weeks 1 to 3: Little to no improvement. The aerobic system is adapting. This phase often feels like nothing is happening.
• Weeks 4 to 8: Most runners see their first meaningful pace improvements, typically 15 to 30 seconds per kilometre (25 to 48 seconds per mile) at the same heart rate.
• Weeks 8 to 16: Improvements compound. Runners who committed to the process often report their MAF pace catching up to or surpassing their previous "easy" pace.

Some runners plateau. If your pace isn't improving after 6 to 8 weeks, check these variables:

Sleep. Consistently sleeping less than 7 to 8 hours significantly impairs aerobic adaptation. Heart rate is elevated, recovery is slower, and training stress accumulates faster than it clears.

Diet. A diet high in sugar and refined carbohydrates suppresses fat oxidation. If you're training aerobically but fuelling anaerobically, you'll adapt more slowly.

Actual heart rate discipline. Review your data. If you're regularly going 3 to 5 bpm over your ceiling on hills or at the end of runs, you're not doing MAF training. You're doing something else.

Stress and recovery. Life stress raises cortisol and resting heart rate. A few high-stress weeks can temporarily flatten your aerobic progress.

Signs Your MAF Pace Is Improving (Even When It Feels Slow)

Progress in MAF training is gradual enough that it can be hard to notice week to week. Here are the signs it's working, even before your test numbers shift dramatically:

You can run longer before your heart rate climbs. In the first weeks, your heart rate may creep up steadily through a run. Over time, it should stabilise more quickly and stay flat.

Uphills become manageable. Early in MAF training, even gentle inclines push you over your ceiling. As your aerobic base builds, you can handle more terrain variation within your heart rate limit.

Your resting heart rate drops. If you track morning resting heart rate, a consistent downward trend over several weeks is a reliable sign of aerobic adaptation.

Recovery feels easier. You'll notice you're less tired between sessions. This is one of the most consistent reports from new MAF athletes: the training volume that used to leave them fatigued starts to feel routine.

Your MAF test pace drops. This is the hard evidence. If your 5 km MAF test pace improved by 30 seconds over 8 weeks, the training is working.

When Your MAF Pace Matches Your Easy Run Pace

One of the milestones in MAF training is the point where your MAF pace feels genuinely easy and matches what used to be your comfortable training pace. For most recreational runners, this takes 3 to 6 months of consistent aerobic base training.

When this happens, two things become possible. First, your actual easy runs become faster because your aerobic system is stronger. Second, if you add any speedwork on top of this base, it produces better results than speedwork layered onto an underdeveloped aerobic system.

Maffetone's position was that most runners never need to add speedwork. The aerobic base, properly built, is sufficient for significant performance improvement at most distances. Whether you agree with that depends on your goals, but the aerobic base is the foundation either way.

Comparing Your Pace to Other Runners

Don't.

This comes up constantly in MAF communities. Someone posts their 9:30/km (15:15/mile) MAF pace and gets discouraged because another runner is doing 5:45/km (9:15/mile). The variables are completely different: age, training history, adjustment applied to the formula, terrain, weather, and the simple fact that aerobic development is individual.

The only comparison worth making is your own pace at week 4 versus week 8 versus week 12. That trend is the only number that tells you whether the training is producing results for your physiology.

Track your runs, do your MAF test on schedule, and let the data tell you whether it's working.

Frequently Asked Questions

What is a good MAF pace for a beginner?

There's no single answer. For someone new to running or returning after a long break, anywhere from 8:00 to 12:00/km (12:50 to 19:20/mile) at their MAF heart rate is completely normal and expected. The starting pace isn't the point; the direction of travel over 3 to 6 months is.

How long before my MAF pace gets faster?

Most runners see their first meaningful improvement in weeks 4 to 8, though this varies considerably. Runners who are consistent with heart rate discipline, sleep, and diet tend to progress faster. A 12-week committed base phase typically produces a noticeable and measurable improvement in MAF test pace.

Is 8:00/km (12:50/mile) a bad MAF pace?

No. It means your aerobic base needs development, which is exactly what MAF training addresses. Many runners start at or slower than this pace. After 3 to 6 months of consistent training, that pace often improves significantly.

Can I use pace alerts instead of heart rate for MAF training?

You shouldn't, at least not during the base phase. The point of training at your MAF heart rate is to stay within your aerobic zone regardless of pace, terrain, or conditions. Using pace as a proxy will almost certainly push you over your ceiling on uphill sections or warm weather runs. Use a heart rate monitor and train to the number.

Should my MAF pace match my marathon pace eventually?

No. Your MAF pace will improve as your aerobic base develops, but your race pace will always be faster than your MAF training pace. Your MAF heart rate is a training ceiling, not a race intensity. The relationship between your MAF pace and your race performance will depend on your fitness level and race distance.

Track It Over Time

If you're new to MAF training, pick a flat 5 km (3.1 miles) course, record your pace on your first outing at your MAF heart rate, and come back to the same course in 4 weeks. That comparison will tell you more about whether the method is working for you than any benchmark you'll find online.

Use the free MAF calculator to confirm you have your heart rate ceiling right, then connect your activity data to track your aerobic progress over time.